Mechanism for transmitting rotary motion.



G. eonnu. MECHANISM FOR TRANSMITTING ROTARY MOTION.

APPLICATION FILED MAR. 23. I9I4.

1,162,233, Patented Nov. 30, 1915.

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Witnesses STATES PATENT onnron.

, GEORGE GODDU, OF WINCHESTER, MASSACHUSETTS, ASSIGNOR T UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATIONOF NEW JERSEY.

MECHANISM FOR TRANSMITTING ROTARY MOTION.

To all whom it may concern:

Be it known that I, GEORGE GoDDU, a citizenof the United States,residing at Winchester, in the county of Middlesex and Commonwealth ofMassachusetts, have'invented certain new and useful Improveembodied in aconstruction illustrated and described in applicants co-pendingapplication Serial No. 271,426, filed July 27, 1905, of which thepresent application is a divislon. e

The object of the invention is to provide novel and improved mechanismby which a driving member, rotating at a uniform or substantiallyuniform speed in one direction,

may transmit to a driven member a rotary motion having variable speeds,or intermittent pauses or reversals.

To this end the invention includes a rotary driving member which may bedriven at a uniform rate of speed by any suitable mechanism, a drivenmemberrotatable about an axis preferably coincident with or adjacent tothe axis of the driving member, and cam controlled connections betweenthe driving and driven members. The cam is preferably stationary, andthe connections preferably include jointed links or arms, the angularrelation of which may be changed by the cam as the links are carriedaround by the driving member to vary the speed or direction of rotationof the driven member. The invention will be readily understood from aninspection of the accompanying drawings and the following detaileddescription of the mechanism. illustrated therein.

In the drawings, Figure 1 is a longitudinal sectional view showing thepreferred form of the invention; Fig. 2 is an elevation looking towardthe left in Fig. 1; Fig. 3 is a sectional view on llIIQ3'3, Fig. 1; andFig. 4 is a sectional-view on line 4 4, Fig. 1.

' In the construction shown in the drawings the driven member consistsof a gear 2 meshing with a pinion. 4 on a shaft 6 and mounted to rotateloosely on the hub of the driving I Specification of Letters Patent. 7

Patented NOV. 30, 1915.

Application filed March 23, 1914. Serial No. 826,656.

member 8. The driving member is substantially cylindrical in shape, andis provided w1th a central web connecting the periphery to the hub whichis mounted to rotate upon a stud 10 secured in the supporting plate 12.The connections between the driving member 8 and the driven member 2consist of two links or arms 14 and 16 pivotally connected together andpivotally connected 'respectively to the driven and driving members. Atthe point where the links 14 and 16 are pivotally connected, a cam roll18 is provided- .which engages a cam groove 20 formed in the fixed plate12. The outer or rear edge of the periphery of the driving member' 8 isprovided with teeth engaged by a pinion 22 secured to a driving shaft24.

By this construction, as the driving member 8 rotates in the directionof the arrow, Fig. 3, the drivenmember 2 will be carried around by meansof the connection through the links or arms 14. and 16 at the same speedand in the same direction so long as the cam groove 20 is concentricwith the axis of the driving and driven members, but any variation fromconcentricity in the cam groove will temporarily through the sameconnections either reverse the direction of rotation of the drivenmember, or arrest its movement, or vary its speed of rotation, accordingto the shape of the cam, so that while the driven member has the samemesne speed of rotation, and in the same direction as the drivingmember, its speed of movement will be'varied, arrested, or its motionreversed by the action of the cam onthe connection. In the constructionshown the cam is shaped to intermittently reverse the driven member.During the greaterportion of the revolution of the driving member thecam roll 18 is traveling up -a gradual rise of the cam groove, andduring a smallportion of the revolution of .the driving member the camroll is traveling down the steep drop of the cam groove.

While the cam roll is traveling up the gradual rise of the cam groove,the driven member 2 is given a forward rotation which is faster thantheforward rotation .of the driving member. When, however, the cam rollpasses down the abrupt drop of the cam I groove, a rapidbackward,rotationrelative to that of the driving member is imparted tothe driven member, which backward motion is sufilcieiitly rapid toreverse the direction of rotation of the driven member and the shaft 6.By connecting the shaft 6 with the driven member through the smallpinion construction shown and described, it will be bodied, what isclaimed is 4, a plurality of rotations in one direction may be impartedto the shaft 6-, and then a partial reverse rotation during eachrotation of the driving member.

\ While it is preferred to employ the specific understood that thisconstruction is not essential to the broader features of the invention,and may be varied or modified without departing therefrom.

.Having explained the nature and object of the invention, andspecifically described one form of machine in which it may be em- 1. Amechanism for transmitting rotary motion, having, in combination, arotary driving member, a rotary driven member, a

plurality of arms connecting said members,

and a cam acting on one of said arms to vary the motion transmitted tothe driven member.

2. A mechanism for transmitting rotary motion, having, in combination, arotary driving member, a rotary driven member, a

jointed connection between .the driving and driven members, and meansfor'varying the angle of the jointed connection to vary, the" speed ofrotation of the driven member.

3. A mechanism for transmitting rotary motion, having, in combination, arotary driving member, a rotary driven member,

connections between said members, and a stationary cam acting on saidconnections to vary the motion transmitted to the driven member.

{L A mechanism for transmitting rotary motion, having, in combination, arotary driving member, a rotary driven member, a

link connection between the members, and a stationary cam acting on thelink connection to vary the speed'of rotation of. the driven member.

for varying the motion transmitted to the.

driven member.

7. A mechanism for transmitting rotary motion, having, in combination, arotary driving member, a stationary cam, a link connected at one end tothe driving member and carrying a roll arranged to engage the cam, arotary driven member, and a second link connected to the driven memberand to the first link.

8. A mechanism for transmitting rotary motion, having in combination, arotary driving member, a rotary driven member, an arm connected to thedriving member, a

second arm connected to the first named arm and to the driven member, acam, and a roll on one of said arms engaging the cam.

9. A mechanism for transmitting rotary motion, having in combination, arotary driving member, a rotary driven member, an arm pivotallyconnected at one end to the driving member, a second armconnected at oneend to the driven member, means connecting the free ends of said armspermitting relative movement thereof, and means for causing suchrelative movement while the driving member is in motion.

1 GEORGE GODDU. Witnesses: i

CHESTER E. ROGERS,

I ABBIE FREAK. I

